Wyndham Hotels & Resorts, Inc. Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Operating Loss Carryforwards [Line Items]
Effective tax rate	31.80%	28.40%	27.90%	28.50%
Domestic and State and Local Authority [Member]
Operating Loss Carryforwards [Line Items]
Income Taxes Paid, Net			$ 42
Parent's Net Investment \| Domestic and State and Local Authority [Member]
Operating Loss Carryforwards [Line Items]
Income Taxes Paid, Net				$ 27
Parent's Net Investment \| Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Income Taxes Paid, Net			11	$ 9
La Quinta Holdings Inc. \| Domestic and State and Local Authority [Member]
Operating Loss Carryforwards [Line Items]
Income Taxes Paid, Net			$ 188